| 0,0 → 1,67 |
|---|
| /* |
| * path |
| * |
| * Displays or sets a search path for executable files. |
| */ |
| |
| static int cmd_path(struct cmd_funcparam *p) { |
| char *buff = p->BUFFER; |
| |
| /* help screen (/?) */ |
| if (cmd_ishlp(p)) { |
| output("Displays or sets a search path for executable files.\r\n" |
| "\r\n" |
| "PATH [[drive:]path[;...]]\r\n" |
| "PATH ;\r\n" |
| "\r\n" |
| "Type PATH ; to clear all search-path settings and direct DOS to search\r\n" |
| "only in the current directory.\r\n" |
| "\r\n" |
| "Type PATH without parameters to display the current path.\r\n"); |
| return(-1); |
| } |
| |
| /* no parameter - display current path */ |
| if (p->argc == 0) { |
| char far *curpath = env_lookup(p->env_seg, "PATH"); |
| if (curpath == NULL) { |
| outputnl("No Path"); |
| } else { |
| unsigned short i; |
| for (i = 0;; i++) { |
| buff[i] = curpath[i]; |
| if (buff[i] == 0) break; |
| } |
| outputnl(buff); |
| } |
| return(-1); |
| } |
| |
| /* more than 1 parameter */ |
| if (p->argc > 1) { |
| outputnl("Too many parameters"); |
| return(-1); |
| } |
| |
| /* IF HERE: THERE IS EXACTLY 1 ARGUMENT (argc == 1) */ |
| |
| /* reset the PATH string (PATH ;) */ |
| if (imatch(p->argv[0], ";")) { |
| env_dropvar(p->env_seg, "PATH"); |
| return(-1); |
| } |
| |
| /* otherwise set PATH to whatever is passed on command-line */ |
| { |
| unsigned short i; |
| strcpy(buff, "PATH="); |
| for (i = 0;; i++) { |
| buff[i + 5] = p->argv[0][i]; |
| if (buff[i + 5] == '\r') break; |
| } |
| buff[i + 5] = 0; |
| env_setvar(p->env_seg, buff); |
| } |
| |
| return(-1); |
| } |